NPI registry status
Active
2026 NPPES data Addiction Medicine (Preventive Medicine) Physician NPI 1720368129 M.D.
Verify on CMS → Catherine Williams, M.D.
Addiction Medicine (Preventive Medicine) Physician in Clearwater, Florida.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 325 in Addiction Medicine (Preventive Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 172 beneficiaries · Addiction Medicine (Preventive Medicine) Physician avg: 959
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Catherine Williams, M.D. filed 2,584 Medicare Part D claims in 2023 as a Addiction Medicine (Preventive Medicine) Physician in Clearwater, Florida, prescribing 91% generic.
- 3K
- Part D claims, 2023
- 91%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Catherine Williams, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,584 Top 13% higher than 87% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Catherine Williams, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Catherine Williams, M.D.?
Quality data not reportedPrimary specialty
Addiction Medicine (Preventive Medicine) Physician
Medicare Part D claims
2,584 169% vs specialty avg
Specialty distribution in Florida
How Addiction Medicine (Preventive Medicine) Physician compares to other specialties among Florida providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Addiction Medicine (Preventive Medicine) Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Catherine Williams, M.D. appears in the CMS NPPES registry as a Addiction Medicine (Preventive Medicine) Physician provider holding M.D. credentials at 3090 CHARLES AVE STE B, Clearwater, FL, 33761, with a listed phone of (727) 900-5533. NPI 1720368129 was issued on 08/17/2011.
Medicare Part D records for calendar year 2023 show 2,584 prescription claims written by this provider, covering 172 Medicare beneficiaries and totaling roughly $232K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 53.1%.
Addiction Medicine (Preventive Medicine) Physician is a narrow specialty nationwide, with 325 enrolled providers across 44 states and an average of 959 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1720368129 |
|---|---|
| Specialty | Addiction Medicine (Preventive Medicine) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 08/17/2011 |
License & disciplinary context - Florida FLDOH 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~75K Florida medical licensees in 2023 - they are NOT specific to Catherine Williams, M.D.. To verify Catherine Williams, M.D.'s current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases
FLDOH publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Catherine Williams, M.D. - brand share 9.0%
Addiction Medicine (Preventive Medicine) Physician average
9% brand-name claims vs 91% generic, on 2,584 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,584
Total Claims
$232K
Total Drug Cost
172
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,610
- Total Day Supply
- 69,860
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $114K
- Generic Drug Cost
- $118K
- Opioid Claims
- 1,371 (53.1% rate)
- Antibiotic Claims
- 21
Patient Demographics
- Average Patient Age
- 61.2 years
- Avg HCC Risk Score
- 1.90
- Gender Split
- 47% female / 53% male
- Age Distribution
- <65: 91, 65-74: 69, 75-84: 12, 85+: 0
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Catherine Williams, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
570 claims
- Morphine Sulfate Er
Morphine Sulfate Er
319 claims
- Gabapentin 180
Gabapentin
180 claims
- Cyclobenzaprine Hcl 131
Cyclobenzaprine Hcl
131 claims
- Oxycodone-Acetamin… 124
Oxycodone-Acetaminophen
124 claims
- Hydromorphone Hcl 96
Hydromorphone Hcl
96 claims
- Ibuprofen 86
Ibuprofen
86 claims
- Pregabalin 86
Pregabalin
86 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 570 |
| Morphine Sulfate Er Morphine Sulfate | 319 |
| Gabapentin | 180 |
| Cyclobenzaprine Hcl | 131 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 124 |
| Hydromorphone Hcl | 96 |
| Ibuprofen | 86 |
| Pregabalin | 86 |
| Methadone Hcl | 74 |
| Diclofenac Sodium | 71 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Addiction Medicine (Preventive Medicine) Physician in FL →
All providers in Florida →
Compare specialties →
Addiction Medicine (Preventive Medicine) Physician Overview
How Catherine Williams, M.D. fits within the Addiction Medicine (Preventive Medicine) Physician landscape nationally.
325
Addiction Medicine (Preventive Medicine) Physician Providers in US
44
States with Addiction Medicine (Preventive Medicine) Physician
959
Avg Claims per Provider
Catherine Williams, M.D.'s 2,584 claims are above the specialty average of 959.
Nearby Addiction Medicine (Preventive Medicine) Physician Providers in Florida
Other clinicians with the same primary specialty enrolled in Florida, drawn from the same CMS NPPES roster as Williams.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Florida medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Addiction Medicine (Preventive Medicine) Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Catherine Williams, M.D.'s specialty? ▼
Catherine Williams, M.D. specializes in Addiction Medicine (Preventive Medicine) Physician and practices in Clearwater, Florida. Credentials: M.D..
How much does Catherine Williams, M.D. prescribe under Medicare Part D? ▼
In 2023, Catherine Williams, M.D. wrote 2,584 Medicare Part D claims totaling $232K in drug costs for 172 beneficiaries.
Where is Catherine Williams, M.D. located? ▼
Catherine Williams, M.D. is located at 3090 CHARLES AVE STE B, Clearwater, FL, 33761. Phone: (727) 900-5533.
What is Catherine Williams, M.D.'s NPI number? ▼
Catherine Williams, M.D.'s National Provider Identifier (NPI) is 1720368129, issued on 08/17/2011.
Does Catherine Williams, M.D. prescribe more brand-name or generic drugs? ▼
Catherine Williams, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $114K in brand drug costs.
Does Catherine Williams, M.D. prescribe opioids? ▼
Yes, Catherine Williams, M.D. had 1,371 opioid claims in 2023 with an opioid prescribing rate of 53.1%.
How many Addiction Medicine (Preventive Medicine) Physician providers are there in the US? ▼
There are 325 Addiction Medicine (Preventive Medicine) Physician providers across 44 states in the US. The average Addiction Medicine (Preventive Medicine) Physician provider writes 959 Medicare Part D claims per year.
What drugs does Catherine Williams, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Catherine Williams, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Morphine Sulfate Er, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Williams, M.D. accept Medicare? ▼
Catherine Williams, M.D. appears in CMS Medicare data with 2,584 Part D claims and 172 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Williams, M.D.'s credentials? ▼
Catherine Williams, M.D.'s NPI is 1720368129 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.